did you take the entire MK4 front hub/knuckle and just cut it down and weld it to a control arm!?!?! Looks like a simple and effective idea, and no real machine work needed for bearing supports and what not if you made it all from scratch! I like it.

I have a GSXR1000 motor on the bench waiting for me to make a 2 up buggy for... you inspire me to get crackin!

yes , I took the whole knuckle , Drilled the top (3/4")where the strut bolts in . I used Heim joints each side of the knuckle . For the Bottom , I just used the existing ball joints ..Off the LCA , I welded a 1/4" small plate and it bolts to the ball joint. And thanks !

I copied the suspension from an ariel atom ....I have not driven it to date , so I will have to let you know if it works good or not . I am hoping that the rear is not so stiff that it just spins versus squatting and hooking up
A couple more shots of it ..

Make sure you use rubber, aluminum, or steel pipes. Stainless or copper will make for a corrosive coolant. I had used 1.25" conduit. In hindsight I wish I had used al weld elbows. Would have been cleaner but I was in a pinch and had no way to weld the aluminum then.

Thanks for posting your build I had completely overlooked a cantilever suspension for my project. That opens a whole new look at things. I am excited to see this come together

The Shocks are from an R1 and are adjustable. I have about an inch of Caster/Camber using the Heim joints on the rear . On the front , I have twice that . There is 3.25" I can raise or lower it .
So,,, I would say it has a lot of adjustability...

I really don't know the ratio's , honestly .. As for uprights ...Where the shocks mount it is just 1/8"
tabs.. As for the pivot point...I drilled through the frame and welded a XXheavy wall pipe in the frame wall. That wall pipe has a 9/16" hole id , and 1 1/4" od..
So , it pivots on a 9/16, grade 8 bolt basically .

update

Hey , I am still working on it ..
Still things to deal with : The wiring harness , Air to water IC and piping , Longer shift cables
Money has been kinda tight , so ? , just going with what I can do ..
Thanks